Author
National Council of Teachers of Mathematics
10
Association of Teachers of Mathematics
4
e-libro, Corp
3
Central Association of Science and Mathematics Teachers (U.S.)
2
Laurito, Francisco
2
School Science and Mathematics Association (U.S.)
2
Akademii͡a nauk SSSR. Quantum Bureau
1
Alberta Teachers' Association. Mathematics Council
1
American Association of Physics Teachers
1
Andonegui Zabala, Martín
1
Association of Teachers of Mathematics in the Middle States and Maryland
1
Australian Association of Mathematics Teachers
1
Buduén Serrano, Inés,
1
Criollo Pérez, Arturo
1
Diez Fumero, Tania
1
Díaz Godino, Juan,
1
Dolores Flores, Crisólogo,
1
ERIC Clearinghouse for Science, Mathematics, and Environmental Education
1
Escudero Trujillo, Rafael,
1
Font, Vicenç,
1
Goñi, J. Ma
1
Gómez, Pedro
1
Helton, Sonia M., 1937-
1
Hernández Fernández, Herminia,
1
Institute of Mathematics and Its Applications
1
James Cook University
1
Mathematical Association
1
Mathematics Education Research Group of Australasia
1
Medina Ocampo, Mercedes F.
1
Micklo, Stephen J.
1
Montana Council of Teachers of Mathematics
1
Muschla, Gary Robert
1
Muschla, Judith A.
1
National Institute of Education (U.S.)
1
National Science Teachers Association
1
Ontario Association for Mathematics Education
1
Ontario Association of Teachers of Mathematics and Physics
1
Ontario Mathematics Commission
1
Planas, Nuria,
1
Reyes Reyes, Cristián
1
Reyes Reyes, Cristián,
1
Rondero Guerrero, Carlos,
1
Rossiĭskai͡a akademii͡a nauk. Quantum Bureau
1
Santos Baranda, Janette,
1
Texas Tech University. Dept. of Mathematics
1